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Showing Their Age
Dating the Fossils and Artifacts that Mark the Great Human Migration
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Gem Gawking
Where to See Famous Diamonds
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Q&A With the Rhino Man
Wildlife biologist Hemanta Mishra's efforts to save the endangered Indian rhinoceros
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Roots of the Sea
What mangroves give the world and why we can't afford to lose them
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Exploring the Amazon Rain Forest
With an ecosystem under siege, every moment in this wild wonderland is one to savor
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Absolute Zero
Why Is A Negative Number Called Absolute Zero?
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Bones to Pick
Paleontologist William Hammer hunts dinosaur fossils in the Antarctic
Fred Spoor
The evolution scholar talks about a landmark new study challenging the classic view of human ancestry
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